Drill



(No Model.)

P. RAYMOND.

DRILL.

Patented Aug. 24, 1897.

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WITNESSES K M ATTORNEYS m: "05m: FEYERS c0, wow-Una WASHINGTON. o. c.

UNITED STATES PATENT OFFICE.

FRANQOIS RAYMOND, OF W'OODHAVEN, NEW YORK, ASSIGNOR OF ONE- HALF TO WILLIAM F. WYCKOFF, OF JAMAICA, NEW YORK.

DRILL.

SPECIFICATION forming part of Letters Patent No. 588,929, dated August 24, 1897. Application filed May 13, 1897. Serial No; 636,321. (No model.)

To all whom it may concern.

Be it known that I, FRANgois RAYMOND, a citizen of the United States, residing at Woodhaven, in the county of Queens and State of New York, have invented new and useful Improvements in Drills, of which the following is a specification.

This invention relates to an improvement in drills suitable in such operations as mining coal; and the invention resides in the novel features of construction set forth in the following specification and claims and illustrated in the annexed drawings, in which- Figure 1 is a sectional side elevation of the drill. Fig. 2 is a plan view of Fig, 1. Fig. 3 is a section along 50, Fig. 1.

' The base or foot 1 by pivots 2 carries a tilting support or frame 3. A screw 4, connected or jointed at 5 to foot 1 and engaging the tilting frame 3 at 6, enables theframe 3 to be adj usted for adjusting the drills 7 from or toward horizontal position, or, as it might be stated, the screw 4 is for vertical adjustment. The shaft 8 is shown rotatable by'crank or suitable power, as at 9, and by means of mitergears 10 and 11 imparting rotation to shaft 12,-

seated in the non-rotating sleeve 13. The

- ing with gear 29 on shaft 8.

sleeve 13 rests on bearings 14 and is held in place by caps 15. This sleeve carries a frame 16 17 for the support of the rotating drills. The shaft 12 connects inline with the center drill 7 and said shaft carries gear-wheels 18 and 19 of varying sizes. The larger gearwheel 18 engages gears 20 for driving the outermost drills, while gear 19 engages gears 21 for rotating the drills intermediate the outermost and center drills.

One of the caps 15 has a stud 22, Fig. 3, en-

gaging one or another of the depressions 23 in sleeve 13 to keep said sleeve from rotating. By raising the cap with stud 22 to clear the sleeve 13'the latter can be turned partly or more or less to laterally set or adjust the drills 7.

The tilting frame 3 carries or has fixed thereto a rack 24, engaged by gear 25 on shaft 26, carrying gear 27, engaging gear 28, mesh- This shaft 8 is not mounted directly on frame 3, but on a slide or carriage 30, adapted to travel back and forth along frame 3. This slide also carthe work.

The drills 7 are non-rotatively seated or slipped onto the spindles 31 and are held again st pulling off by screws or fastenings 32. The spindles 31 are removably connected to the shafts 33. Screw-threads 34: enable each spindle to be screwed to its stem, and a screwcollar 35, engaging. external threads on each spindle and shaft, forms an additional connection. The screw 34 and the collar 35, with its engaging threads, being oppositely threaded the spindle 31 will be secured in place and prevented from turning or screwing loose.

When in the boring of coal hard massesas, for example, of sulfur or other impurities-are encountered in the path of any one of the drills, such drill can be temporarily dismounted and the other drills kept at work, or the drills might be tilted by means of the rotary or adjustable sleeve 13 to pass by such hard substance.

The spindles'31 are shown threaded, and,

their threads are practically pitched to correspond to the pitch of the drill-threads, though this arrangement is not absolutely necessary. What I claim as new, and desire to secure by Letters Patent, is-'-- 1. The combination with a carriage,ofbearings fixed thereon, a cylindrical sleeve mounted to turn in said bearings and provided with a plurality of sockets or depressions arranged transversely about its periphery, caps detachably fixed over said bearings and sleeve, a stud carried by one of said caps and arranged to engage either of said sockets, a drill frame fixed on one end of said sleeve and carrying a gang of drills and their gearing, and a driveshaft journaled in said sleeve and operating to drive said gearing, substantially as described.

2. The combination with a carriage, of halfbearings fixed thereon, a cylindrical sleeve mounted to turn in said bearings and provided with a plurality of sockets or depressions arranged transversely about its periphery, semicircular caps detaehably fixed over said bearings and sleeve, a stud carried by one of said caps and arranged to engage either of said sockets, a drill-frame fixed on one end of said sleeve, a series of drills arranged in a right line in said frame, a drive-shaft journaled in said sleeve, and gearing carried by the frame for transmitting motion from the drive-shaft 10 t0 the drills, substantially as described.

In testimony whereof I hzwe hereunto set my hand in the presence of two subscribing witnesses.

FRANCOIS RAYMOND.

'itnesses:

WM. 0. HAUFF, E. F. KASTENHUBER. 

